Variable-stroke pump



Patented Oct. 11, 1927. I 1,645,429

UNITED STATES PATENT O wanna en rees, or iinvcfi onk, N. Y.vArtIjrnnii-sritoxn PUMP.

kpplicatibn med February 1; 1926. Serial N'd. $5,082.

This invention relates to motor power Figure 13-is a fragmentary sectial ie transmission and has as its main object to taken on line 13130fFigure 11. provide a device that Will eliminate the Referring more in dta'i1t ,th d i present-chain or shaft drives the numeral generallydesignates the l A feature of the invention is, in the pro chassis of aconventional type of 21111101116 vision of a rotary motor used to propela loile.-v v self-contained pov'ver vehicle. 7 Intermediate the sides ofthe chassis and Another object is in .the provision of a rear of a motor26 isa casing 27! Leading pump used to force liquid into rotary from themotor and rotatable by it, is a 10 motor, shaft 28 enterin into thecasing 27} S1idno A further feature ,is-to provide a propelingly set inthe shaft 28 Within the casing ling means that is smooth andsubstantially 27 a wedgershaped adjusting .blocl-r 29 noiseless inoperation, due to the eliminahaving an inclined plane 30 at. oneend andtion ofgears, chainsa itl shaft drives a notch forming a lug 31attheother end.

"15 These and other equally important ob- At the, :farendof the shaft28, relative to ($5 jects are accomplished by, the novel, coir the motoris a head 3Qfo'rmed thereon haystruction, combination and arrangement ofmg there n a recess 33?" Setin the head 32 parts hereinafterdescribedand illustrated is an ad ustable1 crank .34 having an inin theaccompanying.drawings; formingyan cllned plane 85 engageable WitlrtheWedge so tial part of this disclosure, and in 300i the block 29 andasquaredportion 36 '7 hih to thin the recess 3301 the head 32;

Figure l is a side elevational View of a Slidably and rotatablyihounted'on the conventional type of motor car, parts being shaft,intermediatethe motor 26 and easing broken away to show the position ofthe Wall 37isaficollar 38 having loosely mounted transmission mechanismdisclosed herein. at its lowerend apatvl39 engageablewith 75 Figure 2 isa partial longitudinal sec- .aratcliet'ba'r 4O firmly secured to thechassis tional view of the clutch device showing the floor 25. p p vmanner in which the .same controls the i Rigid in the collar, 38 atitsoutenedges pump, drawn to anenlargedscal e. l and passing through apacking "ring" ll 30 i Figure 3 is a fragmentary sectional view boltedinthe Wall'37 .ofthe casing are two so takenon line 3-3 of Figure 2; grods 4L2 having eoiled-thereabout springs 43 Fi & i asiIiiilarViW takenoh line abutting againsttm packing ring {ll-and 4 -4 of Figure 2. thecollar 38. The other ends or therods 40 in Figure 6.

Figure 5 is a cross-section taken online 42arerigidlysetin anothercollar A l. having 35 5- 5 of Figure 2, I hi it a recess 4-5 to allowthe blockto engage 35 Figure 6 is a perspective vie v of: the therewithby means of the lug 31, bestseen Wecl geshaped adjusting block. inFigure 2; the collar ihbtllng slidably and Figure 7 is a perspectiveview of the arch rotatablyniounted onthe. shaft 28;Abutjustable-crankaetuated by the bloolcslioivn ting against the outersurface of thecollar '1' Figure 8 is .a transverse sectional view of.ated: bythe foot of an. operatoriseated in the the pump takenvoh line88 of Figure 2. car, the pedal being -,piv.ote.d at .48 on a Figure 9 isa transverse sectional view 'bi'acket'li) secured to the casingofthe'motor taken on line 99 of Figure 11. 26. 45 v Figure 10 is a similarViewv taken on line Connected nearthe grip aing'lend of the as v107-110.of Figure '11; 7 v pawl. 39 ,is .a rotlffifl Vattaed; to ,a secondFigure 11 isa'longitudinalsectionalview pedal .51 the pedalp1vot1ngat152 on a I taken on the centerline ofth'e rear axle, V bracket53yalso'-secuted to the casingiof the Figure 12 is a sectional viewtaken on line motor 26 and also 'beingiaetuated by the foot 30 124,12bfFigf 1; c of .an operator in the ear. mo

38 is a fork ltiiformed from, a pedal 47 faetuso 7 Rotatably mounted onthe crank 84 is a triangularly shaped plate 54 having pivoted at itsapexes rods 55. Jointed at the ends of the rods are shanks 56 of pistons.57 the pistons fitting in cylinders 58 bored in the casing 27 andhaving therein a plurality of valves 59.

Surrounding the cylinders 58 is a channel 60 cored out of the casing 27Between the cylinders 58 and the channel 60 is positioned a plurality ofvalves 61. Set in the casing 27 is a plurality of stoppers 62 and 62.Leading rearwardly from the lower stopper 62 is a pipe 63 connected withthe propelling means located on the rear axle of the vehicle.

A return pipe 63 from the propelling means enters the casing 27 atthe'forward top narrow portion 64 of the casing. Both pipes 63 and 63are in two parts connected together by means of couplings 65 and 65.

Centrally mounted on the rear axle, the same being in two parts 66 and66 obviously to allow the vehicle to turn, is a casing 67 having aninlet 68 from the pipe 68 at the forward end and an outlet 69 to thepipe 68 at the rear end.

Mounted on the axles 66, 66wvithin the casing 67 are two pairs of rotors70 and 70, and 71 and 71 having vanesrespectively 72 and 7 2, and 73 and7 3 pressed outwardly by the action of flat springs 74.

Fixed in recesses 75 in the rotors 7 0, 70, 7-1 and 71 is a plurality ofpins 76, 7 7, 78 and 79 to engage with similar pins 80, 81, 82 and 83respectively in discs '84, the discs being slidable on keys 85 ingrooves 86 in the axles 66, 66 and having annular recesses 87 in theirouter peripheries.

Surrounding the rotors 7 O, 7 O 71 and'71 are channels 88 and 89 intowhich the vanes 72, 72, 73 and 7 3 project, the channels having openingsrespectively 90 and 91 to the main inlet 68 and openings 92 and 93 tothe main outlet 69.

Journalled in the forward portion of the casing 67 are rods 94 havingmounted on their outer ends, gears 95 to engage a slidable rack 96.

Secured to the rods 94 to cover the openings 90 or 91 are shutter valves97 operable by the rotation of the rods, the same being for the purposeof moving the vehicle forward or in a reverse direction as will later beseen.

The other end of each rod 94 is formed into an eccentric as at 99 toengage the annular recess 87 in the slidable discs 84 and by rotation,slide the discs on the axles 66, 66 as may be desired.

In operation the casing 27 is filled with oil or other heavy liquid andtheshut-ter valves 97, in going forward, are positioned as they are inFigure 11, being controlled in an obvious manner by the operator.

When. the motor in the casing 26 is start the rear, which action isgiven to the collar 44, the same being engaged with the block 29, slidesthe block in the shaft 28. The wedged portion of the block 29 causes thecrank 34 to move outward in the recess 33 of the head 82, taking theplate 54 off the center-line of the shaft 28 and imparting to the same agyratory motion; this motion bring ing the pumps into action.

When the lower piston 57 is moving up,

the valves 59are opened by the oil pressure,

allowing the oil to get in the lower portion of the cylinder 58. On thedownward stroke,,the valves 59 close and the oil in the cylinder isforced through the valve 61 into the channel 60 from which it enters thepipe 68, going to the rear of the car into the inlet 68 From here theoil enters the openings 90 into the channels 88, impinging against thevanes 72 of the rotors 70 and 70, causing the sameto rotate. The rotorsbeing connected to the axles 66, 66 by means of engagement with thediscs 84 and by the pins 76, 77, 80 and 81, imparts a revolving motionto the same, causing the vehicle to move.

The further the pedal 51 is pressed downward, the further off center theplate 54 is moved and therefore the stroke of the pistons 57 is longerand more powerful, giving greater velocity to the oil and hence morespeed to the car.

To move the vehicle in a reverse direction, it is first brought to afull stop. The valves 97, operated by the driver, are then caused toopen the channels 89 and close 88,

all

the same mode of driving being employed as above described. However, theoil now enterschannels 89 instead of 88 and int pinges against the vanesof the rotors71 and 71 in an opposite manner to 70 and 70. The discs 84now engage pins 78, 79 of the rotors 71' and 71, the same being actuatedby the turning of the eccentric 99. This causes theaxle 66, 66 to rotatein a reverse direction, moving the vehicle rearwardlyr Acceleration iscaused in the same manner as above described.

As changes of details of construction could be made within the scope ofthe appended claim, it is intendedthat all matter con tained in theforegoing description or shown in the accompanying drawings, shall beinterpreted as illustrative and not ina limiting sense. I

Having thus described my invention, what casing, a longitudinallygrooved-shaft in said casing, an adjustable Wedge block slidable in saidgroove, an adjustable crank in said groove actuated by said block saidcrank being normally concentric with said shaft, a

triangular plate pivotally mounted on said crank, pistons in saidcylinders connected to the apexes of said plate and resilient meansslidable in said casing to move said crank eccentric with said shaft toimpart a gymtory. motion to said pistons.

In Witness whereof I have afiixed my sig nature.

WILLIAM GLATTES.

